APA (7th ed.) Citation

Smith, P. S. (1920). Electrical goods in Spain. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Smith, Philip S. Electrical Goods in Spain. [Washington?]: U.S. Government Printing Office, 1920.

MLA (9th ed.) Citation

Smith, Philip S. Electrical Goods in Spain. U.S. Government Printing Office, 1920.